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You searched for: mediatype:texts AND collection:theides AND subject:"Switching"
[texts]A New Soft-Switched Resonant DC-DC Converter
This paper presents a new soft-switched resonant dcdc converter using a passive snubber circuit. The proposed converter uses a new zero voltage and zero current switching (ZVZCS) strategies to get ZVZCS function. Besides operating at constant frequency, all semiconductor devices operate at soft-switching without additional voltage and current stresses. In order to validate the proposed converter, computer simulations and experimental results were conducted...
Keywords: ZVZCS; resonant; converter; semiconductor; current switching; snubber
Downloads: 231
[texts]The Analysis of Dead Time on Switching Loss in High and Low Side MOSFETs of ZVS Synchronous Buck Converter
This work is about the analysis of dead time variation on switching losses in a Zero Voltage Switching (ZVS) synchronous buck converter (SBC) circuit. In high frequency converter circuits, switching losses are commonly linked with high and low side switches of SBC circuit. They are activated externally by the gate driver circuit. The duty ratio, dead time and resonant inductor are the parameters that affect the efficiency of the circuit...
Keywords: PSpice Simulation; Resonant Gate Driver; Synchronous Buck Converter; Switching Losses
Downloads: 108
[texts]A Novel Compensating Technique for Power Factor Improvement in Power Electronic Systems
Power electronics systems are non-linear systems, which consume more reactive power and also the loads they feed are mostly inductive loads which leads to a poor power factor. Various compensation techniques are available to bring the power factor nearer to unity. In this paper, a novel compensator is proposed, where in-phase and quadrature components of the supply current are vector-controlled. Implementation of this compensator in a power electronic system operating with a very poor power fact...
Keywords: Total Harmonic Distortion; Vector Control; Compensator; Switching; Power Electronic Converters
Downloads: 78
[texts]A New Active Snubber Circuit for PFC Converter
In this paper, a new active snubber circuit is developed for PFC converter. This active snubber circuit provides zero voltage transition (ZVT) turn on and zero current transition (ZCT) turn off for the main switch without any extra current or voltage stresses. Auxiliary switch turns on and off with zero current switching (ZCS) without voltage stress. Although there is a current stress on the auxiliary switch, it is decreased by diverting it to the output side with coupling inductance...
Keywords: Power factor correction (PFC); soft switching (SS); ZCS; ZCT; and ZVT
Downloads: 96
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